Credulous: having views about the world, the universe and humanity's place in it that are shared only by very unsophisticated people and the most intelligent and advanced mathematicians and physicists.
Terry PratchettDogs are not like cats, who amusingly tolerate humans only until someone comes up with a tin opener that can be operated with a paw. Men made dogs, they took wolves and gave them human things - unnecessary intelligence, names, a desire to belong, and a twitching inferiority complex. All dogs dream wolf dreams, and know they're dreaming of biting their Maker. Every dog knows, deep in his heart, that he is a Bad Dog.
Terry Pratchett